class MoveValidity(object):
def __init__(self, pieces):
self.pieces = pieces
self.edges = EdgesFromPieces(pieces).create_edges()
def is_valid_move(self, old_points, new_points):
for point in new_points:
if self._outside_or_occupied_point(old_points, point):
return False
return True
def is_valid_first_move(self, new_points):
for point in new_points:
if self._within_boundary_and_occupied(point):
return False
return True
def _outside_or_occupied_point(self, old_points, point):
return self.edges.is_point_outside_boundary_except_top(point) \
or (self.edges.is_point_within_top_boundary(point)\
and not self.pieces[point.row][point.col].is_empty()\
and point not in old_points)
def _within_boundary_and_occupied(self, point):
return not self.edges.is_point_outside_boundary(point) \
and not self.pieces[point.row][point.col].is_empty()
def _set_points_in_board_to_tile(self, points, tile):
edges = EdgesFromPieces(self.pieces).create_edges()
for point in points:
if not edges.is_point_outside_boundary(point):
self.pieces[point.row][point.col] = tile